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Find more Mommsen relatives and grow your tree by exploring billions of historical records. Taken every decade since 1790, the U.S. Federal Census can tell you a lot about your family. For example, from 1930 to 1940 there were 15 more people named Mommsen in the United States — and some of them are likely related to you.

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Create, build, and explore your family tree.

What if you had a window into the history of your family? With historical records, you do. From home life to career, records help bring your relatives' experiences into focus. There were 112 people named Mommsen in the 1930 U.S. Census. In 1940, there were 13% more people named Mommsen in the United States. What was life like for them?

Picture the past for your ancestors.

In 1940, 127 people named Mommsen were living in the United States. In a snapshot:

  • 23 adults were unmarried
  • 55% owned their homes, valued on average at $5,194
  • The youngest was less than a year and the oldest was 83
  • On average men worked 49 hours a week

Learn where they came from and where they went.

As Mommsen families continued to grow, they left more tracks on the map:

  • Most mothers originated from
  • 20% were born in foreign countries
  • 52% were first-generation Americans
  • 8% migrated within the United States from 1935 to 1940